U.S. patent application number 14/825309 was filed with the patent office on 2015-12-03 for vehicle transmission, method, and sensor device for detecting a shifting position of a vehicle transmission.
The applicant listed for this patent is KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH. Invention is credited to Christian HUBER, Martin ROTTER, Simon WINTER.
Application Number | 20150345637 14/825309 |
Document ID | / |
Family ID | 50156741 |
Filed Date | 2015-12-03 |
United States Patent
Application |
20150345637 |
Kind Code |
A1 |
HUBER; Christian ; et
al. |
December 3, 2015 |
Vehicle Transmission, Method, and Sensor Device for Detecting a
Shifting Position of a Vehicle Transmission
Abstract
A sensor device is provided for detecting a shifting position of
a vehicle transmission. The vehicle transmission includes a
transmission chamber, in which transmission elements are arranged.
The sensor device includes a bar element, which extends from the
transmission chamber into a secondary chamber sealed off from the
transmission chamber and is arranged such that the bar element can
be moved in dependence on the shifting position. The bar element
has an interface arranged in the transmission chamber for coupling
the bar element to a transmission element positioned in dependence
on the shifting position and an accommodating segment arranged in
the secondary chamber. The sensor device also has a transducer
element, which is attached to the accommodating segment of the bar
element. The sensor device also has a detecting device for
detecting a position of the transducer element depending on the
shifting position or a motion of the transducer element depending
on a change in the shifting position.
Inventors: |
HUBER; Christian; (Muenchen,
DE) ; WINTER; Simon; (Muenchen, DE) ; ROTTER;
Martin; (Muenchen, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH |
Muenchen |
|
DE |
|
|
Family ID: |
50156741 |
Appl. No.: |
14/825309 |
Filed: |
August 13, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
PCT/EP2014/052600 |
Feb 11, 2014 |
|
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14825309 |
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Current U.S.
Class: |
74/473.36 ;
324/207.22 |
Current CPC
Class: |
Y10T 74/20177 20150115;
F16H 59/70 20130101; F16H 63/42 20130101; F16H 2063/3079 20130101;
G01D 5/2006 20130101 |
International
Class: |
F16H 63/42 20060101
F16H063/42; G01D 5/20 20060101 G01D005/20 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 14, 2013 |
DE |
10 2013 101 503.4 |
Claims
1. A sensor device for detecting a shifting position of a vehicle
transmission comprising a transmission chamber in which
transmission elements are disposed, the sensor device comprising: a
bar element extending from the transmission chamber into an
adjoining chamber that is sealed off from the transmission chamber
and disposed so as to be displaceable depending on the shifting
position, wherein the bar element comprises an interface that is
disposed in the transmission chamber for coupling the bar element
to a transmission element that is positioned depending on the
shifting position and an accommodation segment that is disposed in
the adjoining chamber; a transducer element that is mounted on the
accommodating segment of the bar element; and a detection device
for detecting a position of the transducer element that is
dependent on the shifting position or a displacement of the
transducer element that is dependent on a change of the shifting
position.
2. The sensor device according to claim 1, further comprising at
least one sealing element for fluid-tight and/or particle-tight
sealing off of the adjoining chamber from the transmission chamber,
wherein the bar element is fed through the at least one sealing
element.
3. The sensor device according to claim 1, further comrpising at
least one guide element that is disposed in the adjoining chamber
at least partly around the bar element, wherein the at least one
guide element is designed to guide the bar element in the adjoining
chamber along an axis of motion of the bar element during a
displacement of the bar element that is dependent on a change of
the shifting position.
4. The sensor device according to claim 1, wherein the detection
device is designed to detect a direction of motion of the
transducer element that is mounted on the bar element along an axis
of motion of the bar element that is dependent on the change of the
shifting position during a displacement of the transducer element
that is dependent on a change of the shifting position.
5. The sensor device according to claim 1, wherein the detection
device comprises a sensor based on a magnetic principle and the
transducer element comprises a magnet or a magnetisable
material.
6. The sensor device according to claim 1, wherein the bar element
is made of aluminum or plastic.
7. A vehicle transmission, comprising: a transmission chamber in
which transmission elements are disposed, a selector fork that is
disposed in the transmission chamber and that is designed to shift
at least one transmission element; a selector shaft that is
disposed in the transmission chamber and that is designed to
displace the selector fork depending on a shifting position of the
vehicle transmission; and a sensor device for detecting a shifting
position of the vehicle transmission, the sensor device comprising:
a bar element extending from the transmission chamber into an
adjoining chamber that is sealed off from the transmission chamber
and disposed so as to be displaceable depending on the shifting
position, wherein the bar element comprises an interface that is
disposed in the transmission chamber for coupling the bar element
to a transmission element that is positioned depending on the
shifting position and an accommodation segment that is disposed in
the adjoining chamber; a transducer element that is mounted on the
accommodating segment of the bar element; and a detection device
for detecting a position of the transducer element that is
dependent on the shifting position or a displacement of the
transducer element that is dependent on a change of the shifting
position, wherein the interface of the bar element of the sensor
device is mechanically coupled to the selector fork by at least one
connecting element.
8. The vehicle transmission according to claim 7, wherein the at
least one connecting element is designed to transfer a displacement
of the selector fork that is dependent on a change of the shifting
position to the bar element of the sensor device.
9. The vehicle transmission according to claim 7, wherein the at
least one connecting element comprises a connecting rod whose first
end is mechanically coupled to the interface of the bar element and
whose second end comprises a ball segment or is connected to a ball
element, wherein the ball segment or the ball element is designed
to be mechanically connected to the selector fork.
10. The vehicle transmission according to claim 8, wherein the at
least one connecting element comprises a connecting rod whose first
end is mechanically coupled to the interface of the bar element and
whose second end comprises a ball segment or is connected to a ball
element, wherein the ball segment or the ball element is designed
to be mechanically connected to the selector fork.
11. A method for detecting a shifting position of a vehicle
transmission, wherein the vehicle transmission comprises a
transmission chamber in which transmission elements are disposed,
wherein the method comprises the acts of: transferring a
displacement that is dependent on a change of the shifting position
of a transmission element that is positioned depending on the
shifting position and that is disposed in the transmission chamber
to a bar element, wherein the bar element extends from the
transmission chamber into an adjoining chamber that is sealed off
from the transmission chamber and is disposed so as to be
displaceable depending on the shifting position, wherein the bar
element comprises an interface that is disposed in the transmission
chamber for coupling the bar element to the transmission element
that is positioned depending on the shifting position and an
accommodating segment that is disposed in the adjoining chamber;
and determining a position of a transducer element that is
dependent on the shifting position or a displacement of a
transducer element that is dependent on a change of the shifting
position by way of a detecting device in order to detect the
shifting position of the vehicle transmission, wherein the
transducer element is mounted on the accommodating segment of the
bar element.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of PCT International
Application No. PCT/EP2014/052600, filed Feb. 11, 2014, which
claims priority under 35 U.S.C. .sctn.119 from German Patent
Application No. 10 2013 101 503.4, filed Feb. 14, 2013, the entire
disclosures of which are herein expressly incorporated by
reference.
BACKGROUND AND SUMMARY OF THE INVENTION
[0002] The present invention relates to a sensor device for
detecting a shifting position of a vehicle transmission, to a
vehicle transmission and to a method for detecting a shifting
position of a vehicle transmission.
[0003] Inductive sensors, e.g. moving coils, planar coils and the
like are frequently used for detecting a shifting position of a
vehicle transmission. Here, in automotive applications in
particular, a permanent magnet is normally disposed in a
transmission chamber or oil chamber and a sensor element is
disposed separately from the oil chamber.
[0004] It is an object of the present invention to provide an
improved sensor device for detecting a shifting position of a
vehicle transmission, an improved vehicle transmission and an
improved method for detecting a shifting position of a vehicle
transmission.
[0005] This object is achieved by a sensor device for detecting a
shifting position of a vehicle transmission, a vehicle transmission
and a method for detecting a shifting position of a vehicle
transmission according to embodiments of the invention.
[0006] According to embodiments of the present invention, a
transducer element of a sensor for detecting a shifting position of
the vehicle transmission can be sealed, separated or encapsulated
relative to a transmission chamber containing lubricant, also
referred to as an oil chamber. In this case, the transducer element
is, in particular, disposed on a component that is designed for
transferring a displacement of a transmission element that is
dependent on a change in the shifting position to the transducer
element.
[0007] As a result of the separation or encapsulation of the
transducer element relative to the actual transmission chamber of
the vehicle transmission, a risk of fouling of the transducer
element, for example by swarf from transmission elements in the
transmission chamber or oil chamber, can be avoided or excluded. In
particular, fouling of the transducer element by ferritic particles
of transmission elements in the transmission chamber or oil chamber
can be prevented. As a result, the detection accuracy as well as
the longevity of a sensor device for detecting a shifting position
of a vehicle transmission can be improved.
[0008] As a result, a sensor or a sensor device with a transducer
element, for example in the form of a permanent magnet, can be used
for a transmission control module. The transducer element can be
disposed in a separate chamber that is sealed off from the
transmission chamber. A detection device of the sensor can for
example be disposed separately from the transmission chamber. The
detection device and the transducer element can be disposed spaced
apart from each other. As a result of the arrangement of the
transducer element in a separate sealed chamber, it can be reliably
prevented that a magnetic transducer element attracts, for example,
ferritic particles from the transmission chamber and
unintentionally acts as a swarf collector. Consequently, a change
of a sensor signal caused by fouling such that a displacement
position would be detected incorrectly can be prevented over the
lifetime of the sensor device.
[0009] A sensor device for detecting a shifting position of a
vehicle transmission comprising a transmission chamber in which
transmission elements are disposed has the following features:
[0010] (a) a bar element extending from the transmission chamber
into an adjoining chamber that is sealed off from the transmission
chamber and that is disposed so as to be displaceable depending on
the shifting position, wherein the bar element comprises an
interface disposed in the transmission chamber for coupling the bar
element to a transmission element that is positioned depending on
the shifting position and that comprises an accommodating segment
that is disposed in the adjoining chamber;
[0011] (b) a transducer element that is mounted on the
accommodating segment of the bar element; and
[0012] (c) a detection device for detecting a position of the
transducer element that is dependent on the shifting position or a
displacement of the transducer element that is dependent on a
change of the shifting position.
[0013] The vehicle transmission can be a manual transmission, a
direct shift gearbox, an automated manual transmission (AMT) or an
automatic transmission (AT). The vehicle transmission can be
provided for a vehicle that can be a motor vehicle, such as for
example an automobile or a commercial vehicle, a rail vehicle or a
waterborne vessel. The transmission chamber of the vehicle
transmission can be at least partly enclosed by a transmission
housing. The transmission elements as well as at least one
lubricant can be disposed in the transmission chamber. The
transmission elements can be transmission shafts, gearwheels,
pinions, a selector shaft, a selector fork and the like. The
transmission chamber can be fouled by freely moving swarf. The
shifting position or a shift state of the vehicle transmission can
correspond to an engaged gear or an engaged drive position of the
vehicle. The sensor device can be based on a contactless detection
principle. The adjoining chamber can be sealed off from the
transmission chamber and separated relative to the surroundings of
the vehicle transmission or connected thereto by means of an
opening. As a result, the adjoining chamber can be kept free of the
swarf present in the transmission chamber. The bar element can be a
rod, piston rod or similar. The bar element can be made of a
non-magnetic material. The interface can be disposed on a first end
of the bar element and the accommodating segment can be disposed on
a second end of the bar element. The interface of the bar element
remains element in the transmission chamber during a displacement
of the bar that is dependent on the shifting position. The
accommodating segment of the bar element remains in the adjoining
chamber during a displacement of the bar element that is dependent
on the shifting position. The interface can comprise an attachment
segment for attaching a connecting element to the transmission
element that is positioned depending on the shifting position. The
accommodating segment can be designed to accommodate the transducer
element. By disposing the transducer element within the adjoining
chamber, the transducer element is protected against fouling by the
swarf present in the transmission chamber, which could be attracted
by the transducer element. The detection device can be disposed
outside the transmission chamber of the vehicle transmission.
[0014] At least one sealing element can also be provided for
fluid-tight and/or particle-tight sealing of the adjoining chamber
off from the transmission chamber. In this case the bar element can
be fed through the at least one sealing element. In particular, the
at least one sealing element can be designed to seal an opening of
the adjoining chamber to the transmission chamber, for example
against swarf. The at least one sealing element can comprise a
sealing sleeve, a sealing ring or similar. The at least one sealing
element can be designed to enable a displacement of the bar element
that is dependent on a change of the shifting position, wherein a
sealing effect of the at least one sealing element is maintained.
Such an embodiment gives the advantage that the adjoining chamber
can be reliably sealed off from the transmission chamber while
preserving mobility of the bar element.
[0015] Furthermore, at least one guide element can be provided,
which is disposed in the adjoining chamber at least partly around
the bar element. The at least one guide element can be designed to
guide the bar element in the adjoining chamber along an axis of
motion of the bar element during a displacement of the bar element
that is dependent on a change of the shifting position. The at
least one guide element can be in the form of or act as a slide
bearing. Such an embodiment gives the advantage that tilting of the
bar element with the transducer element or measurement element
relative to the axis of motion can be prevented because of the at
least one guide element. In other words, the distance of the axis
of motion from the detection device can be essentially held
constant, so that a change of a sensor signal caused by such
tilting or a change of distance can be prevented.
[0016] In this case the detection device can be designed to detect
a direction of motion of the transducer element along an axis of
motion of the bar element that is dependent on a change of the
shifting position during a displacement of the transducer element
mounted on the bar element that is dependent on a change of the
shifting position. Such an embodiment gives the advantage that
compensation of manufacturing and/or assembly tolerances can be
achieved during the exclusive measurement of a direction of
motion.
[0017] According to one embodiment, the detection device can
comprise a sensor based on a magnetic principle and the transducer
element can comprise a magnet or a magnetisable material. In this
case the detection device or the sensor device can comprise a
magnetic field sensor, a Hall sensor or similar. The transducer
element can, for example, be implemented as a permanent magnet or
as a unit to be magnetized. Such an embodiment gives the advantage
that a position and/or displacement of the transducer element can
be determined contactlessly for shifting position detection, even
if, for example, the detecting device is disposed so as to be
separated from the transducer element by an air gap, a housing wall
or similar.
[0018] In particular, the bar element can be made of aluminum or
plastic. The bar element can comprise a non-magnetic material. Such
an embodiment gives the advantage that a position determination or
displacement determination of the transducer element by the
detection device is not interfered with or adversely affected.
[0019] A vehicle transmission comprising a transmission chamber in
which transmission elements are disposed also has the following
features:
[0020] (a) a selector fork that is disposed in the transmission
chamber and that is designed to shift at least one transmission
element;
[0021] (b) a selector shaft that is disposed in the transmission
chamber and that is designed to displace the selector fork
depending on a shifting position of the vehicle transmission;
and
[0022] (c) a version of the aforementioned sensor device for
detecting a shifting position of the vehicle transmission, wherein
the interface of the bar element of the sensor device is
mechanically coupled to the selector fork by means of at least one
connecting element.
[0023] The selector fork can represent the transmission element of
the vehicle transmission that is positioned depending on the
shifting position. The selector shaft can be displaced
translationally depending on the shifting position. The selector
shaft can be designed to displace the selector fork along an axis
of the selector shaft depending on the shifting position. A
translational displacement of the selector fork that is dependent
on the shifting position can be transferred into a translational
displacement of the bar element by means of the at least one
connecting element. A shifting position or a shift state of the
vehicle transmission can be advantageously detected by way of a
version of the aforementioned sensor device.
[0024] In this case the at least one connecting element can be
designed to transfer a displacement that is dependent on a change
of the shifting position of the selector fork to the bar element of
the sensor device. By use of the at least one connecting element, a
translational displacement that is dependent on the shifting
position of the selector fork can be transferred into a
translational displacement of the bar element. Such an embodiment
gives the advantage that the shifting position can be reliably
detected by the sensor device.
[0025] According to one embodiment, the at least one connecting
element can comprise a connecting rod, whose first end is
mechanically coupled to the interface of the bar element and whose
second end comprises a ball segment or is connected to or a ball
element. Here, the ball segment or the ball element can be designed
to be mechanically connected to the selector fork. In this case the
ball segment or the ball element can be displaceably connected to
the selector fork. Such an embodiment gives the advantage that
compensation of tolerances and measurement of a direction of motion
that is dependent on a change of the shifting state are enabled by
a position transfer by way of guide elements of the sensor device
as well as the at least one connecting element with a ball segment
or a ball element.
[0026] A method for detecting a shifting position of a vehicle
transmission, wherein the vehicle transmission comprises a
transmission chamber in which transmission elements are disposed,
comprises the following acts:
[0027] (a) transferring a displacement that is dependent on a
change of the shifting position of a transmission element that is
positioned depending on the shifting position and that is disposed
in the transmission chamber to a bar element, wherein the bar
element extends from the transmission chamber into an adjoining
chamber that is sealed off from the transmission chamber and the
bar element is displaceable depending on the shifting position,
wherein the bar element comprises an interface that is disposed in
the transmission chamber for coupling the bar element to the
transmission element that is positioned depending on the shifting
position and an accommodating segment that is disposed in the
adjoining chamber; and
[0028] (b) determining a position of a transducer element that is
dependent on the shifting position or a displacement of a
transducer element that is dependent on a change of the shifting
position by way of a detection device in order to detect the
shifting position of the vehicle transmission, wherein the
transducer element is mounted on the accommodating segment of the
bar element.
[0029] The method can advantageously be implemented in combination
with or using a version of the aforementioned sensor device. As a
result of implementing the method, a shifting position of a vehicle
transmission can advantageously be detected by way of a version of
the aforementioned sensor device.
[0030] Other objects, advantages and novel features of the present
invention will become apparent from the following detailed
description of one or more preferred embodiments when considered in
conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0031] FIG. 1 is a schematic representation of a vehicle
transmission with a sensor device according to an exemplary
embodiment of the present invention; and
[0032] FIG. 2 is a flow chart of a method according to an exemplary
embodiment of the present invention.
DETAILED DESCRIPTION OF THE DRAWINGS
[0033] In the following description of the preferred exemplary
embodiments of the present invention, identical or similar
reference characters are used for the elements illustrated in the
different figures that have a similar action, wherein a repeated
description of said elements is omitted.
[0034] FIG. 1 shows a representation of a vehicle transmission with
a sensor device according to an exemplary embodiment of the present
invention. A vehicle transmission 100, a transmission chamber 102,
a transmission housing 104, a selector shaft 106, for example a
selector fork 108, a connecting element 110 or a connecting rod, a
ball element 112, a sensor device 120, an adjoining chamber 122, a
transducer element 124, for example in the form of a permanent
magnet, a detecting device 126 or a sensor or sensor element, a bar
element 130, an interface 132, an accommodating segment 134, an
axis of motion 136, a sealing element 140 and, by way of example,
two guide elements 150 are shown. An outer region of the vehicle
transmission 100 is located outside the transmission chamber 102
and the adjoining chamber 122.
[0035] The vehicle transmission 100 includes the transmission
chamber 102, which is separated from the outer region by way of the
transmission housing 104. The selector shaft 106 and the selector
fork 108 are disposed in the transmission chamber 102 within the
transmission housing 104. The selector fork 108 is displaceably
mounted on the selector shaft 106. The selector shaft 106 is
designed to guide the selector fork 108. The selector shaft 106 is
implemented so as to be translationally displaceable. The selector
shaft 106 is accordingly displaced translationally depending on a
selected shifting position of the vehicle transmission 100.
[0036] According to an alternative exemplary embodiment, the
selector shaft 106 can be rotatable and the transducer element 124
can be disposed accordingly. The selector shaft 106 is designed to
transfer a displacement that is dependent on the shifting position
to the selector fork 108 in the form of a translational
displacement of the selector fork. The selector fork 108 is
designed to be displaced in a translational displacement along an
axis of the selector shaft 106 by a displacement of the selector
shaft 106 that is dependent on the shifting position. Even though
it is not shown in FIG. 1, the vehicle transmission 100 has further
transmission elements. The selector fork 108 can be brought into
mechanical contact with at least one further transmission element
or released from mechanical contact with at least one further
transmission element depending on a shifting position of the
vehicle transmission 100.
[0037] Furthermore, the vehicle transmission 100 includes the
sensor device 120. The sensor device 120 is designed for detecting
the shifting position of the vehicle transmission 100. The sensor
device 120 includes the adjoining chamber 122, the transducer
element 124, the detection device 126, the bar element 130, the
interface 132, the accommodating segment 134, the sealing element
140 and the guide elements 150.
[0038] The bar element 130 extends from the transmission chamber
102 into the adjoining chamber 122. In this case, a first end of
the bar element 130 is disposed in the transmission chamber 102 and
a second end of the bar element 130 is disposed in the adjoining
chamber 122. The bar element 130 includes the interface 132 and the
accommodating segment 134.
[0039] Furthermore, the axis of motion 136 of the bar element 130
is shown. The axis of motion 136 of the bar element 130 extends
along a longitudinal axis of extension of the bar element 130. The
bar element 130 is designed to move along the axis of motion 136
depending on a change of the shifting position or depending on a
displacement of the selector fork 108.
[0040] The interface 132 of the bar element 130 is disposed on the
first end of the bar element 130 that is disposed in the
transmission chamber 102. The bar element 130 is connected to the
selector fork 108 at the interface 132 by use of the connecting
element 110 and the ball element 112. In this case, the connecting
element 110 is attached to the interface 132 of the bar element
130. The connecting element 110 is connected to the selector fork
108 by way of the ball element 112 so as to be pivotable about an
axis relative to the selector fork 108. The connecting element 110
and the ball element 112 are designed to transfer the displacement
of the selector fork 108 that is dependent on the shifting position
to the bar element 130.
[0041] The adjoining chamber 122 is sealed off from the
transmission chamber 102 by way of the sealing element 140. The bar
element 130 extends through the sealing element 140 or the bar
element 130 is fed through the sealing element 140 here. The
sealing element 140 is disposed around the bar element 130 in a
region between the interface 132 and the accommodating segment 134.
The guide elements 150 are disposed in the adjoining chamber 122.
The guide elements 150 are designed to guide the bar element 130
during a displacement along the axis of motion 136 or to hold the
bar element on the axis of motion 136. Owing to the sealed
adjoining chamber 122, a magnetic encapsulation is achieved for a
position controller, in this case a transmission controller.
[0042] The accommodating segment 134 of the bar element 130 is
disposed on the second end of the bar element 130 that is disposed
in the adjoining chamber 122. The transducer element 124 is
accommodated in the accommodating segment 134. The transducer
element 124 remains within the adjoining chamber 122 during a
displacement of the bar element 130 along the axis of motion 136,
even though this is not explicitly illustrated in FIG. 1.
[0043] The detection device 126 of the sensor device 120 is
disposed on an outer surface of the transmission housing 104 by way
of example. In this case the detection device 126 is disposed in a
surface region of the outer surface of the transmission housing 104
that is adjacent to the adjoining chamber 122. The detection device
126 is designed to determine by means of a magnetic sensor
principle a position of the transducer element 124 that is
dependent on the shifting position or a displacement of the
transducer element 124 that is dependent on a change of the
shifting position in order to detect the shifting position of the
vehicle transmission 100.
[0044] A segment of a transmission control module of the vehicle
transmission 100 with the sensor device 120, including a magnetic
mounting with a bearing and encapsulation, is illustrated in FIG.
1. A translational displacement of the selector shaft 106 takes
place during a change of the shifting position. This displacement
of the selector shaft 106 causes a displacement movement of the
selector fork 108 along an axis of the selector shaft 106. The
displacement movement of the selector fork 108 is transferred to
the bar element 130 by way of the ball element 112 and the
connecting element 110. During this operation, the bar element 130
moves along the axis of motion 136. Consequently, the transducer
element 124 accommodated in the accommodating segment 134 moves
with the bar element 130. The detection device 126 is designed to
detect such a position change of the transducer element 124. The
change of the shifting position can be detected based on the
position change of the transducer element.
[0045] FIG. 2 shows a flow chart of a method 200 according to an
exemplary embodiment of the present invention. The method 200 is
used for detecting a shifting position of a vehicle transmission
having a transmission chamber in which transmission elements are
disposed. The method 200 includes a step 210 of transferring to a
bar element a displacement that is dependent on a change of the
shifting position of a transmission element that is positioned
depending on the shifting position and that is disposed in the
transmission chamber. In this case, the bar element extends from
the transmission chamber into an adjoining chamber that is sealed
off from the transmission chamber and is disposed so as to be
displaceable depending on the shifting position. In this case, the
bar element has an interface that is disposed in the transmission
chamber for coupling the bar element to the transmission element
that is positioned depending on the shifting position and an
accommodating segment that is disposed in the adjoining chamber.
The method 200 also includes a step 220 of determining a position
of a transducer element that is dependent on the shifting position
or a displacement of a transducer element that is dependent on a
change of the shifting position by way of a detection device in
order to detect the shifting position of the vehicle transmission.
Here, the transducer element is mounted on the accommodating
segment of the bar element. The method 200 can advantageously be
implemented in combination with or using a sensor device such as
the sensor device from FIG. 1. As a result of implementing the
method 200, a shifting position of a vehicle transmission can
advantageously be detected by use of a sensor device such as the
sensor device from FIG. 1.
REFERENCE CHARACTER LIST
[0046] 100 vehicle transmission [0047] 102 transmission chamber
[0048] 104 transmission housing [0049] 106 selector shaft [0050]
108 selector fork [0051] 110 connecting element [0052] 112 ball
element [0053] 120 sensor device [0054] 122 adjoining chamber
[0055] 124 transducer element [0056] 126 detection device [0057]
130 bar element [0058] 132 interface [0059] 134 accommodating
segment [0060] 136 axis of motion [0061] 140 sealing element [0062]
150 guide element [0063] 200 detecting method [0064] 210 transfer
step [0065] 220 determination step
[0066] The foregoing disclosure has been set forth merely to
illustrate the invention and is not intended to be limiting. Since
modifications of the disclosed embodiments incorporating the spirit
and substance of the invention may occur to persons skilled in the
art, the invention should be construed to include everything within
the scope of the appended claims and equivalents thereof.
* * * * *